I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose.

The quote by Arthur Conan Doyle, "I consider that a man's brain originally is like a little empty attic, and you have to stock it with such furniture as you choose," uses a metaphor to describe the process of learning and knowledge acquisition. Doyle compares the human brain to an empty attic, suggesting that we are born with a blank slate in terms of knowledge. Just as an attic is a space that can be filled with furniture (items of personal choice), the brain can be filled with ideas, experiences, and information that we decide to gather throughout our lives.

The origin of this quote comes from Doyle's broader reflections on education and the development of the mind. As the creator of the famous detective Sherlock Holmes, Doyle was deeply interested in how the brain works, particularly in how a person’s intellect and reasoning are shaped. In Holmes' character, we see the value of carefully selecting and organizing knowledge, which mirrors Doyle's belief that what we choose to fill our minds with has a significant impact on our thinking and decision-making.

This metaphor also emphasizes personal responsibility in how we nourish our intellect. Just as a person chooses what to put in an attic, we have the freedom to select the knowledge and skills we want to develop. The quote encourages the idea that individuals can shape their minds and personal growth by carefully choosing what they allow to influence them.

In essence, Doyle's quote highlights the importance of intentional learning. It suggests that the human brain is not a passive vessel but an active space where we have the power to decide what we will learn and what knowledge we will prioritize. By carefully curating the information we take in, we shape our thinking, much like furnishing an attic with items that suit our needs and preferences.